Rotary swaging machine



A ril 13 1926. 1,580,949

A. BERG ROTARY SWAGING MACHINE Filed March 12 I 1924 2 Sheets-Sheet 1 IN V EN TOR.

' AT bRNEY April 13 1926. 1,580,949

A. BERG ROTARY SWAGING MACHINE Filed March 12 1924 2 Sheets-Sheet 2 IN VEN TOR.

Jud/raw 11 130719 WW A TTORNEY pertains, to make and use the same.

Patented Apr. 13, 1926.

UNITED STATES PATENT OFFICE.

ANDREW BERG, OF BRIDGEPORT, CONNECTICUT, ASSEGNOI}. TO THE COULTER & Mc-

KENZIE MACHINE COMPANY, OF BRIDGEPORT, CONNECTICUT.

ROTARY SWAG-ING MACHINE.

Application filed March 12,

To all whom it may concern:

Be it known that I, ANDREW BERG, citizen of the United States, residing at Bridge port, in the county of Fail-field and State-\ of Connecticut, have invented certain new and useful Improvements in Rotary Swaging Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap- My invention relates to machines of the type known as rotary swagers. 'The machines of this character, in common use, rotate the die carrying head against a series of rollers and are adapted only for circular swaging, whereas, in my 'improved type of machine, the die carrying head is held stationary, and the rollers-are revolved about the head so that articles of any irregular shape are capable of being forged by simply varying the shape of the dies to correspond to the shape of the finished product.

Referring to the drawings wherein the same numerals of reference indicate like parts through the several views,

Figure 1 represents a side elevation of the machine; I

Figure 2 is a detail view of the stationary die carrying'head and its shank,- sectional view of the rotatable roller carrying head embracing the die carrying head, sectional driving ear rotatably mounted on the shank of the die carrying head and integral with the roller carrying head;

" Figure 3 is a detail view of the front face of the die carrying head;

Fi ure 4 is an enlarged front elevation of t e die carrying and roller carrying heads, and sectional view of the roller carrying head on line 4-4 of Figure 2;

Figure 5 is an enlarged detail view of a pair of swaging dies operating on a piece of work;

Figure 6 is a similar view of the swaging dies and finished work;

Figure 7 is an enlarged broken sectional view of the roll carrying head, and broken view of the die carrying head showingv a modified view of the means for normally expanding the die holding slides, and

Figure 8 is an enlarged broken sectional view of the rotating head showing a substitute for the rollers, and broken View of the die head and one of the slides.

' tegral part 0 1924. Serial no. 698,699.

die carrying head 8. The re uced portion 7 a of said shank is firmly secured in the machine standard, Figure 1.

The large gear 6, Figure 2, forms an inthe roller carrying head 9 in which are journaled the rollers 10, Figures 2 and 4.

The head 8, Figure 3, is provided with the radial slots 11 adapted to receive the radially operating slides or carriers 12, 13, 14, and 15, Figure 4. "16, 17, 18, and 19, are the forging or swaging dies carried by the slides and are'preferably detachable therefrom so that they can be interchanged to suit any irregular sha ed work required. The slides are held in p ace by the removable plate 8*, Figure 1. I

20 are recesses formed in one face of the slides 12, 13, 14, and 15, adapted to receive the ends of the arms 21,22, 23, and 24, of

the lovers 25, 26. These levers are operativelymounted in the recesses 25 26, Figure 3, of the die carrying head 8 and open into the slots 11. Springs 27 engage the arms of the levers 25, 26, so as to maintain a uniform spring balance to the die carrying slides.

As the roller carrying head 9 rotates about the head 8, its rollers alternately contact with the slides to force them inward toward the-work and bring their dies thereagainst. In Figure 4, it will be observed, the rollers 10 are temporarily engaged with the pair of opposed slides 12, 13, whose inward movement will actuate the levers 25, 26, to temporarily force outward the other two slides 14, 15, so as to give an unobpin 29. This arrangement would revent the operative slides'colliding with t e temporaril inoperative slides.

As 8 own in the, drawings, the dies employed are designed to form a taper tang, rectangular in cross section, and to form the tang at the end of the round rod 30.

This rod is mounted in the V-shaped seats 31 of the carriage 32, Figure 1, with its outer end against the adjusting screw 33. The carriage is mounted on the support 34 secured to the die carryi head 8. The

carriage is actuated to and mm the dies by means of the handle lever 35 inion 36, and rack 37. 38 'is an adjust-ah e sto adapted to limit the inward trave of the carriage.

The end of the rod is preferabl heated to a de ee suitable for swaging, an is gradually ed between the dies, see partially formed tang 39, Figures 1 and 5, until the com lete taper tang 40 is formed, as shown in i ure 6. The number of rollers employe to actuate the dies will depend on the rotary speed of the head 9.

As before mentioned, the rimary object and purpose of the present invention is to swag-e irregular shapes, and to accomplish this, it is absolutely. essential that the die carrying head must remain stationary, while the means emplo ed for actuating thedles to sw e rotate about the die carrying head, which is the reverse, as before mentioned, of the operation for swaging articles round in cross section. I employ rollers for actuat ing the die carrying slides as $ater speed and increased product is there obtained.

A pulley could be substituted or the gear 6, but it would not be as efiective owing to its liability to slip. It is absolutely necesscrew each opposed pair and temporarily would be considered an equivalent to the means employed.

It is evident that, the dies tools and the slides could be made 1n 1,

but no economic advantage would be gained by doing so.

Projections similar to 9, Figure 8, could besubstituted for rollers, but the rollers would show less friction and wear.

Having I claim is:- a v 1. A machine of the character described, comprising a stationary head, a support for the head, radially 0 rating die carrying slides mounted on t e head, a rotatable roller carrying head embracing the stationary head, a support'for the rotating head whose'rollbrs are adapted to alternately engage each opposed'pair of slides and temporarily force them inward, means connectng the pair of operating slides with the idle pair to retreat the latter when the former are advanced.

2. A swaging machine of the character described, comprising a supported head,

radially operating die carrying slidesmounted in the head and arranged inopposed pairs, means for alternately en aging vance them toward the axis of the head, and pivotally supported levers under spring tension connecting the pairs of slides so that the advancing pair will retreat the other pair through the medium of said levers.

In testimony whereof I aflix my signature.

ANDREW-BERG.

or operativethus describedmy invention what 

